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{6bf5b009-5b7e-4d79-a4a6-41b1b5153865}w64.sys

Laflurla

Part of the Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The file {6bf5b009-5b7e-4d79-a4a6-41b1b5153865}w64.sys by Laflurla has been detected as adware by 26 anti-malware scanners. It runs as a Windows 64-bit kernel mode device driver named “{6bf5b009-5b7e-4d79-a4a6-41b1b5153865}w64”. It will plug into the web browser and display context-based advertisements by overwriting existing ads or by inserting new ones on various web pages.
Publisher:
StdLib  (signed by Laflurla)

Product:
StdLib

Version:
1.4.4.6 built by: WinDDK

MD5:
bfe34b3f1c0e5c6e2fc9e85ff45f7d37

SHA-1:
665c0cf4dc199b4d51edcb2f55c50ba5a25ffcdd

SHA-256:
b33265e421847f391164f9b5602dd5f03848150320cb5679c30f77d3ae959034

Scanner detections:
26 / 68

Status:
Adware

Explanation:
Injects advertising in the web browser in various formats.

Analysis date:
4/24/2024 8:05:56 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Adware.SwiftBrowse.CH
366

Agnitum Outpost
Riskware.Agent
7.1.1

AhnLab V3 Security
Win-PUP/BrowseFox.Gen
2015.02.04

avast!
Win32:BrowseFox-GK [PUP]
2014.9-160204

AVG
Generic
2017.0.2844

Baidu Antivirus
Adware.Win32.BrowseFox
4.0.3.1624

Bitdefender
Adware.SwiftBrowse.CH
1.0.20.175

Bkav FE
W64.HfsAdware
1.3.0.6379

Clam AntiVirus
Win.Adware.Swiftbrowse-497
0.98/21511

Emsisoft Anti-Malware
Adware.SwiftBrowse.CH
8.16.02.04.11

ESET NOD32
Win64/BrowseFox (variant)
10.10542

Fortinet FortiGate
Adware/BrowseFox
2/4/2016

F-Prot
W64/A-59c9c70a
v6.4.7.1.166

F-Secure
Adware.SwiftBrowse.CH
11.2016-04-02_5

G Data
Adware.SwiftBrowse.CH
16.2.25

K7 AntiVirus
Adware
13.193.14852

McAfee
Trojan.Artemis!A13B327A1D7A
5600.6500

MicroWorld eScan
Adware.SwiftBrowse.CH
17.0.0.105

Norman
Adware.SwiftBrowse.CH
11.20160204

nProtect
Adware.SwiftBrowse.CH
15.02.03.01

Reason Heuristics
PUP.Yontoo.Laflurla (M)
16.2.4.11

SUPERAntiSpyware
Adware.BrowseFox/Variant
9344

Trend Micro House Call
HS_BROWSEFOX.SM
7.2.35

Trend Micro
HS_BROWSEFOX.SM
10.465.04

VIPRE Antivirus
Threat.4150696
38950

Zillya! Antivirus
Adware.Yotoon.Win64.14
2.0.0.2052

File size:
47.7 KB (48,824 bytes)

Product version:
1.4.4.6

Copyright:
Copyright © 2013 StdLib

Original file name:
StdLib.sys

File type:
Driver (Win64 SYS)

Language:
English (United States)

Common path:
C:\Windows\System32\drivers\{6bf5b009-5b7e-4d79-a4a6-41b1b5153865}w64.sys

Digital Signature
Signed by:
Laflurla

Authority:
VeriSign, Inc.

Valid from:
2/3/2014 2:00:00 PM

Valid to:
2/4/2015 1:59:59 PM

Subject:
CN=Laflurla, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Laflurla, L=Santa Monica, S=California, C=US

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
0541E25DBE69A2BC84C39AB35093A301

File PE Metadata
Compilation timestamp:
12/7/2014 6:44:02 PM

OS version:
6.1

OS bitness:
Win64

Subsystem:
Native (none required)

Linker version:
9.0

CTPH (ssdeep):
768:lX7G2EjsnyXeOUEGG0LA8tWFZuL470h6aqxcCT2kvsVRwlZD3NKU:BFID6EGnLA8AFJTNEVmD0U

Entry address:
0xC064

Entry point:
48, 83, EC, 28, 4C, 8B, C2, 4C, 8B, C9, E8, 95, FF, FF, FF, 49, 8B, D0, 49, 8B, C9, 48, 83, C4, 28, E9, E2, 50, FF, FF, CC, CC, 78, C2, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 54, C6, 00, 00, A0, 91, 00, 00, 28, C1, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, DA, CA, 00, 00, 50, 90, 00, 00, D8, C0, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, D2, CB, 00, 00, 00, 90, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, B6, CB, 00, 00, 00, 00, 00, 00, A2, CB, 00, 00...
 
[+]

Entropy:
6.3923

Code size:
34.5 KB (35,328 bytes)

Driver
Display name:
{6bf5b009-5b7e-4d79-a4a6-41b1b5153865}w64

Type:
Kernel device driver (KernelDriver)

Group:
PNP_TDI


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